FT: Annan Athletic 0-3 Rangers - Helander marks first appearance in five months with opener; Roofe whips into bottom corner & Sakala cross loops into net
FT: Hearts 0-0 Livingston - hosts through on penalties in all-Premiership tie
FT: Motherwell 2-1 Aberdeen - Ramirez heads in his 15th of season; Van Veen fires deflected equaliser for hosts then Shields sweeps home
FT: Partick Th 0-1 Dundee Utd - Harkes nets fine finish from outside box
FT: St Mirren 4-0 Kelty Hearts - Greive converts close-range header, Jones curls stunning strike into top corner then Kiltie double caps win
Morton & Kilmarnock win in Championship; League 1 leaders Cove held by Queen's Park; Stranraer win in League 2
Kemar Roofe
Game over already?
Kemar Roofe had threatened moments earlier and this time the Rangers striker fires low past the goalkeeper from 25 yards.
His 11th goal of the season.
Image source, BBC SportAnnan Athletic 0-1 Rangers
Aaron Ramsey goes close to his first Rangers goal.
The Wales midfielder is inexplicably left unmarked in the box, but he turns and lifts his shot over the bar.
Annan Athletic 0-1 Rangers
Annan have a half-hearted shout for a penalty as Chris Johnston takes on Borna Barisic then falls to the ground, but the winger appeared to fall into the Croatia left-back more than anything and the referee is unimpressed.
Ayo Obileye has to score...
And the defender's stuttering run doesn't work for a second time in a week and Craig Gordon saves to send Hearts through.
Annan Athletic 0-1 Rangers
Rangers keep coming. Kemar Roofe gets onto a chipped ball but heads up into the air, which falls kindly into the arms of goalkeeper Greg Fleming.
Heart of Midlothian 0-0 Livingston (4-3 pen)
On-loan Everton striker Ellis Simms puts Hearts ahead.
Heart of Midlothian 0-0 Livingston (3-3 pen)
Cristian Montano fires against the outside of the post.
Advantage Hearts.
Annan Athletic 0-1 Rangers
Rangers are in the mood.
Borna Barisic's free-kick is pushed away well by Annan goalkeeper Greg Fleming.
Heart of Midlothian 0-0 Livingston (3-3 pen)
Ben Woodburn doesn't make great content but the on-loan Liverpool forward scores.
Heart of Midlothian 0-0 Livingston (2-3 pen)
Jason Holt stutters but scores to put Livi ahead again.
Heart of Midlothian 0-0 Livingston (2-2 pen)
Peter Haring smashes into the roof of the net to level.
Heart of Midlothian 0-0 Livingston (1-2 pen)
Sean Kelly puts Livi ahead again.
Filip Helander
It's an early goal for Rangers.
Filip Helander meets a corner kick, and Annan's Dominic Docherty is able to head it over the bar.
But as a second corner kick comes in, this time Helander directs it into the far corner.
Image source, BBC SportHeart of Midlothian 0-0 Livingston (1-1 pen)
John Souttar levels for Hearts.
Annan Athletic 0-0 Rangers
Rangers new Polish right-back Mateusz Zukowski fires in an ambitious shot from the right, and it's a simple enough save for the goalkeeper.
Then Fashion Junior gets in behind the defence but can't direct the header on goal, and Annan clear for a corner.
Heart of Midlothian 0-0 Livingston (0-1 pen)
Andrew Shinnie sends Craig Gordon the wrong way.
Annan Athletic 0-0 Rangers
Annan have a free-kick and a chance to throw the ball into the box early, but it bounces harmlessly wide.
We're into a penalties at Tynecastle as 120 minutes produces no goals!
At least we have to have them in the shoot-out!
Annan Athletic 0-0 Rangers
We're off at Galabank as Rangers kick off.
Will an all-changed Rangers, including Aaron Ramsey, ease through to the quarter-finals, or will Annan produce one of the biggest-ever Scottish Cup shocks in the biggest game in their history?
Click thumbs up for an Annan win, thumbs down for Rangers.
Annan Athletic v Rangers (17:30)
Nearly two weeks on from his deadline-day loan move from Juventus, Aaron Ramsey makes his first start after missing the defeat by Celtic, Ramsey then coming on as a substitute against Hearts and Hibs.
It is a relatively rare run-out on an artificial surface for the Rangers players, with Livingston the only top-flight side with a synthetic surface these days.
Ramsey has played in European Championships, Serie A, the Premier League, FA Cup finals at Wembley and a Europa League final. Galabank is a whole new ball game.
Image source, SNSAnnan's club shop has been busier than usual with visiting Rangers fans